An abnormal load is one that cannot legally be carried on a vehicle within the maximum weights and/or dimensions in the Construction and Use Regulations and Road Vehicles (Authorised Weight) Regulations.

Such loads may be carried on vehicles known as “Special Types” vehicles under the Road Vehicles (Authorisation of Special Types) (General) Order.

Legislation requires hauliers to notify the movement of most abnormal loads and abnormal vehicles to the highway and bridge authorities before moving them by road.

There is also a requirement to notify heavier loads and vehicles to the police. For the largest and heaviest abnormal loads, prior permission before moving is required from Highways England’s Abnormal Loads Team.

This topic deals specifically with the particular class of special types vehicles known as “abnormal indivisible load vehicles” (AILVs).

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